Toshiba M645-S4080 Maintenance Manual page 75

2Troubleshooting Procedures
Procedure 1: CRT connection check
Procedure 2: CRT set check
Procedure 1
The CRT cable may be damaged or the connections may be loose. Use windows application
to check device can work fine or not. Perform Check 1:
Check 1 Make sure CRT cable is firmly plugged into both the CRT set and the CRT port
of the computer. If the cable is connected correctly, go to Check 2.
Check 2 Make sure the CRT port is firmly secured to the system board of the computer. If
the malfunction remains, go to Check 3.
Check 3 The CRT cable may be damaged. Replace with a good cable. If the malfunction
remains, go to Procedure 2.
Procedure 2
The CRT set may be faulty. Perform Check 1:
Check 1 Try using the set for CRT reception. If it does not work, the set may be damaged.
If the set does work, perform Check 2.
Check 2 Try connecting a different CRT to the computer. If the replacement CRT works,
the original set may be damaged. If the replacement set does not work the system
board may be damaged. Replace it with a new one following the instructions in
Chapter 4.
Satellite/Satellite Pro M600/M640/M645/M647 Series/Dynabook TX/AX Series Maintenance Manual
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CRT connection check
CRT set check
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